i use 2 of the 9X13 baking dishes for the tater tots...in a 400 oven.. cook till crispy turning them over in the oven. (no worries if they break up a little cause they gonna do worse later)
In large Dutch oven,(while taters are baking) brown ground beef with onions drain grease. then add the water for the gravy to the meat (on back of package around 1 1/2 for each package) and blend the gravy mix in the 1 cup cool water then add to the meat meat while it boils. then add your sour cream to the meat gravy mix. when tater tots are crispy, mix the meat into the tots and mix well, then cover with cheese and return to the oven till cheese melts.